128821180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{1237}}^1$

素因数の和:1414

約数の個数: 48

約数和(自身を含む): 279530496

約数和(自身を除く): 150709316

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 127, 164, 205, 254, 410, 508, 635, 820, 1237, 1270, 2474, 2540, 4948, 5207, 6185, 10414, 12370, 20828, 24740, 26035, 50717, 52070, 101434, 104140, 157099, 202868, 253585, 314198, 507170, 628396, 785495, 1014340, 1570990, 3141980, 6441059, 12882118, 25764236, 32205295, 64410590, 128821180]

約数ペア:

[(1, 128821180), (2, 64410590), (4, 32205295), (5, 25764236), (10, 12882118), (20, 6441059), (41, 3141980), (82, 1570990), (127, 1014340), (164, 785495), (205, 628396), (254, 507170), (410, 314198), (508, 253585), (635, 202868), (820, 157099), (1237, 104140), (1270, 101434), (2474, 52070), (2540, 50717), (4948, 26035), (5207, 24740), (6185, 20828), (10414, 12370)]